I built a thingamagoop a few months ago and made this demo by combining it with a delay pedal that I also built. All the sounds are made using only these devices. Check out www.bleeplabs.com if you want to make/own one of your own.

Just a chiptune sounding beat made in ableton.

Added some skronky guitar to a cool electronic-y drum beat. guitar run through izotope trash. mastered (if you can call it that) in soundbooth